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Address:No.3 Xiangfeng Road, Miaobian Industry, Liaobu Town, Dongguan City, Guangdong Province, China
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Grinding beads for horizontal bead mill


Grinding beads

Choosing the "right" grinding beads – how to select the most appropriate bead for your application. Many choices for grinding media. 

1. Chemical compatibility. Is the grinding media going to introduce any chemical contamination issues? All grinding media will contaminate the product being ground to some extent or another even if the contamination is in the ppm or ppb range, so it's important to consider what's acceptable and what isn't. While steel grinding media is attractive because of its relative density and low cost it can produce graying of product especially one that is white or light-colored. Certain products, for electronics and eye-care for example, can have no metallic contamination so the choice is limited.

2. Physical compatibility. The relative hardness and abrasiveness of grinding media, grinding chamber and product need to be considered. Since the grinding media is inexpensive compared to the equipment it should wear more rapidly.

3. Grinding media density. The range of specific gravity for commercially available grinding media runs from sp.gr. 1.0 for plastics to sp.gr. 15 for tungsten carbide. It makes sense that you wouldn't select a very light grinding bead for a highly viscous system or a very dense grinding bead for a low-solids aqueous suspension.

4. Grinding bead diameter. The same composition of grinding media is often available in different size ranges. Typically the larger the in-feed material, the larger the grinding bead you need to use to do the work. It also follows that the finer the grind you need the smaller the grinding bead. Other size considerations include whether screens or gaps are being used to separate the media from the product – as a rule of thumb the smallest grinding bead diameter should be three times the size of the opening in the screen or gap.

-- More information refer to Naonch Bead Mills

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